By Stine Jacobsen and Kate Abnett COPENHAGEN/BRUSSELS (Reuters) – Damage to the Nord Stream gas pipeline from Russia to Europe was caused by powerful explosions, Danish police said on Tuesday, echoing earlier findings into leaks that erupted in the network under the Baltic Sea and that have been blamed on sabotage. In what a Swedish newspaper described as the first publicly released footage of damage to the system, film from a private drone appeared to show a gaping rupture in one pipe. Expressen reported a 50-metre section missing from one area of pipeline. Dwindling flows of gas from Russia,…